@misc{indiciaef6319d39b9d0,
  title = {Reconnaissance map showing relative amounts of soil and bedrock in the Platte Canyon quadrangle, Jefferson County, Colorado},
  author = {P. W. Schmidt},
  year = {1976},
  doi = {10.3133/mf803},
  url = {https://pubs.usgs.gov/publication/mf803},
  note = {Source identifier: mf803}
}